Print Grassy Key Marina Please Rate Vote 1 Vote 2 Vote 3 Vote 4 Vote 5 59073 Overseas Hwy Marathon, Florida 305-440-3055 Website By Water 24.710989, -81.104213 JavaScript must be enabled in order for you to use Google Maps. However, it seems JavaScript is either disabled or not supported by your browser. To view Google Maps, enable JavaScript by changing your browser options, and then try again.Map Marina: Under New Management
59073 Overseas Hwy
59073 Overseas Hwy